I have two Luxaire furnaces in the house, same model. They both worked fine until a couple of days ago, when one of them didn't blow warm air anymore. My first thought was the igniter, so I replace it together w/the flame sensor. But comparing the two systems, they act a little different in the timing between the igniter and the gas valve.
On the good one, the igniter turns on, after abt 5 seconds the gas valve opens (I hear a click) and the burner lights up, and after another 2-3 seconds, the igniter turns off. As one would expect.
On the not so good one (the one in which I changed the igniter), the timing between the igniter and the gas valve seems to be a bit off. I see the igniter turning on, after abt 7-8 seconds, it turns off, and only after that the gas valve opens (I hear the click) and the burner ignites as the igniter still has some thermal inertia.
Is there a way to adjust the timing between the igniter and the gas valve from the control board? Or is it something else at play?
Thanks so much for any ideas, Serban.
Best Answer
The timing is usually based on conditions not all ignighters are the same some get hotter quicker,.
Quit throwing parts at it.
Look up your model , error codes, I found for that brand 7 or 8 flashes flame could not be established after several attempts, 2,3 or 6 flashes pressure switch problems, 4 or 11 flashes limit switch. All of these point to different things and the timing being different can be because of the failure of a component or set point. Most units have a removable panel that when you remove it it kills power to the board. There is normally a plunger switch that can be pulled out and this is a service mode so you can see the flashes on the board when it fails. Try this to identify what is causing it not to light and get to the problem without wag (wild ass guess) now you will be troubleshooting so you move up to swag (scientific WAG).